Chemistry 9701 · AS & A Level · Atoms, molecules and stoichiometry

Atoms, molecules and stoichiometry — practice question

'Red lead' is a red pigment whose formula is $\text{Pb}_3\text{O}_4$. Every formula unit of 'red lead' is identical. A formula unit contains three lead ions and four oxide ions. In 'red lead', lead has two different oxidation states. State the oxidation states of lead in 'red lead'.

  • A$+1$ and $+2$
  • B$+1$ and $+3$
  • C$+2$ and $+4$
  • D$+2$ and $+6$

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